Fiber optic drone control beats any RF jammer

Original Article ↗ Hacker News Discussion ↗

Historical context and prior systems

  • Commenters note fiber/wire-guided control is decades old: TOW, Spike, North Korean systems, even WWII wire‑guided missiles and torpedoes.
  • Current Ukraine war already uses various guided and tethered systems (TOW, Stugna-P, Spike derivatives).

Technical characteristics of fiber control

  • Fiber is extremely light (order of ~14 g/km for 0.125 mm plastic fiber), so 10–12 km spools add only ~140 g.
  • Reported cost for ~10–12 km of fine fiber is around $1k retail; cheaper via mass/Chinese suppliers. Seen as small relative to targets destroyed or soldiers’ lives.
  • Single‑mode vs multi‑mode debated: multi‑mode cheaper, single‑mode lighter; payload trade‑off matters.
  • Copper wire is heavier, higher resistance, and more vulnerable to RF/EM effects, though technically usable at shorter ranges.

Operational pros and cons

  • Main advantage: immunity to RF jamming and guaranteed high‑bandwidth, low‑latency video/control, enabling back‑end compute/AI and ISR.
  • Downsides: limited range vs RF relays, reduced explosive payload due to spool weight, and fiber snagging/LOS/obstacle issues when launching from cover.
  • Some see fiber as more suited to relay or surveillance drones than to expendable attack drones.

Traceability and vulnerability of the fiber

  • One camp: the fiber “trail” reveals the launch site within mortar or grenade‑launcher range.
  • Counter‑arguments:
    • 0.125 mm transparent fiber is extremely hard to see, especially after explosions and in undergrowth.
    • Following it on foot is dangerous in contested zones; operators can cut the fiber and “shoot‑and‑scoot.”
    • Spool must be on the drone, not on the ground, to avoid dragging and snagging thousands of meters of cable.

Alternatives: lasers, relays, autonomy, and power

  • Laser line‑of‑sight links suggested, but weather, smoke, precision pointing, and horizon limits are major issues; relay drones or balloons add complexity and vulnerability.
  • Power‑over‑tether seen as feasible only at short range; long‑range power needs heavy cable and high losses.
  • Many expect a shift toward autonomous drones using computer vision and sensor fusion, but others argue fully robust autonomy and anti‑deception targeting remain hard and expensive.

Electronic warfare and counter‑EW

  • Drone attrition from jamming is high; some propose jammer‑seeking or jammer‑mapping drones feeding artillery.
  • Others note that building cheap, reliable jammer‑hunters is harder and costlier than deploying more jammers, especially if jammers can cycle on/off or be concealed.

Ethics, escalation, and arms race

  • Several posts express concern about normalization of lethal urban drone tech, escalating drone warfare, and lack of effective arms‑control treaties.
  • Others argue supporting defensive use (e.g., Ukraine) is justified despite these risks.